来自《耶鲁大学开放课程：1600年后西方社会的流行病 第4集 第4集》

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  Well looking back with modern understanding,
  从现在的立足点回望过去
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  you would probably conclude that the medical theory
  你不难发现威尼斯人创立的
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  underlying the Venetian system of quarantine
  疫检制度的基础医学理论
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  was flawed by modern standards.
  完全经不起现代标准的推敲
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  There were no pestilential miasmas,
  鼠疫不会散发瘴气
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  and many of the rituals of purification were to no effect.
  很多传统的净化方式也宣告无效
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  But the idea of lengthy and military-enforced isolation
  但实践却证明 靠军事强制执行的
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  was highly effective in practice.
  漫长隔离是行之有效的
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  Forty days
  四十天
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  exceeded the incubation period of the disease,
  远远超过了病毒的潜伏期
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  and so were sufficient to guarantee
  这样必然可以保证被释放的
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  that a person then released was medically harmless.
  人员绝对不会携带任何病毒